Sinopec Reports 235 Bcm Reserves at China’s First Ultra-Deep Shale Gas Field

Why It Matters

The reserve size and new ultra‑deep technology give China a scalable pathway to boost domestic gas supply, reducing reliance on imports and supporting energy‑security goals.

Key Takeaways

• Sinopec approved 235.7 Bcm proven reserves at Ziyang Dongfeng field
• Field depth 4,500‑5,200 m makes it China’s first ultra‑deep shale gas site
• AI‑enhanced imaging boosts reservoir characterization in Cambrian shale
• Project provides replicable tech pathway for deeper shale gas development
• Reserves exceed 100 Bcm, expanding China’s unconventional gas supply

Pulse Analysis

China’s push into ultra‑deep shale gas marks a strategic shift from shallow, low‑yield plays to formations that promise substantial volumes. The Ziyang Dongfeng field, situated in the Sichuan basin, taps the Cambrian Qiongzhusi Formation—arguably the world’s oldest commercial shale. By securing 235.7 billion cubic metres of proven reserves, Sinopec not only sets a national record but also demonstrates that geological complexity can be managed at depths exceeding 5 km. This breakthrough aligns with Beijing’s broader goal of diversifying its energy mix and curbing coal dependence.

The technical hurdles of drilling at 4,500‑5,200 m are formidable: extreme downhole temperatures, high pressures, and heterogeneous rock properties. Sinopec’s response has been to embed artificial‑intelligence algorithms into seismic imaging, sharpening reservoir delineation and reducing exploratory risk. Coupled with next‑generation ultra‑deep drilling rigs and high‑pressure hydraulic fracturing systems, the company has built a proprietary workflow that can be replicated across other deep formations. This integrated approach shortens development timelines and lowers cost per barrel of gas, positioning Sinopec as a technology leader in the global shale arena.

From a market perspective, the new reserve base bolsters China’s domestic gas supply, easing import pressures and supporting the country’s carbon‑neutrality pledge. Analysts anticipate that the proven‑reserve figure will attract downstream investors seeking stable feedstock for power generation and petrochemical processes. Moreover, the success of AI‑driven exploration may spur similar investments in other resource‑intensive sectors, accelerating China’s broader digital‑energy transformation. As the field moves toward production, its performance will serve as a benchmark for future ultra‑deep projects worldwide.